Cleaner for disk harrows.



PATENTED SEPT. 18,

0. GAYLORD. CLEANER. FOR DISK HARROWS.

APPLICATION FILED 13110.4. 1905.

2 SHEETSSHEET 1.

/NVENTO/7 ARTHUR C.GAY LORD I A TTOHNE Y8 No. 831,505. I PATENTED SEPT.18, 1906.

' ,A. 0. GAYLORD.

CLEANER FOR DISK HARROWS.

APPLICATION FILED DEC. 4, 1905.

2 SHEETS-SHEET 2.

4 ARTHURCGAYLOQ D A TTOF/VES UNITED STATES PATENT DFFIGE.

ARTHUR COVVLES GAYLORD, OF GALESBURG, ILLINOIS, ASSIGNOR TO GALESBURGCOULTER-DISC 00., OF GALESBURG, ILLINOIS.

CLEANER FOR DISK HARROWS.

Specification of Letters Patent.

Patented Sept. 18, 1906.

To all whom it may concern:

Be it known that I, ARTHUR CowLEs GAY- LORD, a citizen of the UnitedStates, residing at Galesburg, in the county of Knox and State ofIllinois, have made certain new and useful Improvements in Cleaners forDisk Harrows, of which the following is a specification.

My invention relates particularly to that class of disk harrows in whichthe disks are arranged. in gangs and are provided with individualscrapers by which the earth and trash accumulating upon the disks isremoved, its object being to roduce a device of the character whichshall be efficient and one in which the scrapers can be adjusted to meetvarying conditions.

To these ends my invention consists of certain novel features ofconstruction, arrangement, and combination of parts, as will behereinafter fully described, and pointed out in the claims, referencebeing had to the accompanying drawings, in which Figure 1 is a rearelevation of a gang of disks with my improvements applied. Fig. 2 is asimilar view showing parts enlarged. Fig. 3 is a fragmentary elevationwith one of the disks in section. Fig. 4 is a transverse section. Fig. 5is a top plan view of a portion of the main frame and attached parts.Fig. 6 is a front elevation showing the scrapers locked. Fig. 7 is aperspective view of the rock-shaft and operating means.

In the drawings, A is the main frame or weight-box, provided with thestandards B, carrying the ordinary disk gangs.

C is the scraper-bar, supported by bearings D at the rear of the frame.Said scraperbar 0 is so mounted as to be susceptible of an axial andrevolving motion and carries the scraper-blade heads E, to which areriveted the scraper-blades F, extending downwardly and rearwardly. Oneof these heads E has an arm G, extending forwardly under frame A andterminating in the hook H, the open part of the same being downward.Engaging this hook is an eye I, which is at the lower end of arm J,extending downwardly from tending upwardly from the forward end ofrocker-shaft K is a foot-lever L, upon which is a perforated extensionM, to which is attached one end of a coil-spring N, the other end ofwhich is attached to frame A. The

the rocker-shaft K. Ex

rocking shaft K is supported by boxings O and is susceptible of an axialas well as a revolving movement. Upon the front of frame A is pivotedthe weighted dog or catch P,which is adapted to engage and hold thelever L. In its normal position the lower end of the scraper-blade F isheld back and away from the outer edge of the disk X by the coiledspring N, so as not to clog the disk with dirt or trash.

In operating the scraper-blades from the drivers seat the foot-lever Lis pushed over to position shown in dotted lines, Fig. 5. As the leveris so pushed, the rocker-shaft K begins to revolve, carrying thescraper-bars C and the attached scraper heads and blades first towarddisks X by means of the'arm J, eye I, hook H, and arm G, and then asthis movement continues to advance and the eye I begins to describe anarc of a circle upwardly the shaft K is caused to move forwardly in itsbearings by the upward movement of hook-arm G, and said arm is rotatedas it moves laterally, causing the bar 0 to revolve in its bearings aswell as to move axially, carrying all the attached scraper heads andblades. This combined movement carries the lower ends of thescraperblades first laterally toward the disks, swinging inwardly towardthe center of the disks and coming in contact with the concave or innersurface of the disks at their outer perimeter, where they are pressedgently a ainst said disks as the movement of the blades advances towardtheir centers. Thus as the disks revolve their inner surfaces arerelieved of any soil or trash adhering thereto.

The foot-1e ver L may be engaged with the hook P by lifting one edge ofthe foot, so as to allow the hook to engage the lever, and when thusengaged the scraper-blades are held against the disks near theircenters. The lever L will be returned to its normal position and theblades to their normal position by the tension of the spring N when thefoot is in contact with the lever L at the point of contact with the dogor catch P, as the said catch cannot then engage the lever. Thus at thewill of the operator the scrapers may be held in contact with the disksnear their centers whenever he chooses to do so, and in this positionthe blades-will have a tendency to prevent trash or soil in certainconditions of moisture from becoming clogged about the the reach of themoving soil and trash that may be carried up by the disks. Whenevertrash is lodged upon the blades K in the scraping process, it is carriedback and away from the moving disks, where it falls off. of its ownaccord or is removed, when the blades are again returned into the movingsoil carried up by the disks in the process of again scraping saiddisks.

It will be noticed that the foot-lever L has a rotary and slidingmovementthat is, the operator by placing his foot against the lever andpushing forwardly and sidewise causes the pendent crank-arm J to swingfrom a vertical position to a horizontal position underneath the weightbox or frame A. If the sole of the shoe of the operator 1s pressed uponthe forward horn of the foot-lever, the dog or catch P will engage theother horn and hold the lever in this position. If, on the other hand,the sole of the shoe is pressed against both horns of the foot-lever,the catch or dog P will be prevented from engaging the end of the horn,and thus the foot-lever L will be allowed to return to its normalposition by the tension of the spring'N as the foot is withdrawn.

Thus it will be seen that I provide a device by means of which thescraper-blades are susceptible of engaging the inside surface of thedisks from their outer edge to the hubs at the will of the operator,quickly or at leisure, and that they'can be locked in the inner positionagainst the hubs or released to their normal position back and away fromtheir cutting edge. The tension of these scraper-blades is to beregulated by the adjustment of the scraper-blade heads upon the squarerod or shaft C by the set-screws S and also the throw of the points ofthe blades toward the hubs by the adjustment of the boxings carrying thecrank foot-lever in the slotted boltholes R of the weight box or frameA.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is'

1. In a disk harrow, the combination with a series of concavo-convexdisks, of a series of swinging scraper-blades therefor held nor mallyaway from the disks and their centers, a supporting rock-shaft for saidblades, means for actuating said rock-shaft, and a catch cooperatingwith said actuating means to positively hold said blades against theinner faces and centers of said disks.

2. In a disk harrow, the combination with a series of concavo-convexdisks, of a corresponding series of scraper-blades held normally awayfrom the inner faces and centers of said disks, a rock-shaft supportingsaid blades mounted to shift axially and also to rotate, anactuating-lever to turn and shift said rock-shaft, a pivoted catchadapted to engage and retain said actuating-lever, and a springcontrolling the rock-shaft to restore the blades to their normalposition in reverse traverse along the inner faces of the disks.

3. In a disk harrow, the combination with a series of concavo-convexdisks and a corresponding series of scraper-blades held normally awayfrom the inner faces and centers of said disks, a rock-shaft supportingsaid blades mounted to slide axially and also to rotate, anactuating-lever to rotate and slide said rock-shaft, a shaft connectedto said actuating-lever and mounted to slide axially and also to rotate,means connecting said shaft with the rock-shaft and means for adjustingsaid shaft laterally.

4. In a disk harrow the combination with a series of concavo-convexdisks, of a corresponding seriesiof scraper-blades held normally awayfrom the inner faces and centers of said disks, a rock-shaft supportingsaid scrapers and mounted to slide axially and to rotate, an armprojecting forwardly from one of said scrapers, a bell-crank levermounted at right angles to said rock-shaft and having a pivotalconnection with the arm projecting from the scraper-blades, and meansfor actuating said bell-crank lever to cause the scraper-blades to firstmove toward the inner faces of the disks adjacent to their perimetersand then swing inwardly toward the centers of the disks. v

5. In a disk harrow, the combination with a series of concave-convexdisks, of a corresponding series of scraper-blades held normally awayfrom the inner faces and centers of said disks, a rock-shaft supportingsaid blades, said blades being adjustable longitudinally with respect tosaid rock-shaft, said rock-shaft mounted to slide axially and also torotate, an arm projecting forwardly and downwardly from one of saidblades, a bellcrank lever mounted at right angles to said rock-shaft,said bell-crank lever and the arm projecting from the scraper-bladehaving a universal-joint connection, means for actuating said bell-cranklever, and means for adj usting laterally said bell-crank lever.

6. In a disk harrow, the combination with a series of concavo-convexdisks, of a corresponding series of scraper-blades, a rockshaftsupporting said blades and mounted to have an axially-sliding and arotary movement, an arm projecting forwardly and downwardly from one ofsaid blades, a shaft mounted at right angles to the rock-shaft to havean axially-sliding and also a rotary gage said foot-lever and lock thesame,,

whereby the scraper-blades may beheld to inner faces and against thecenters of the disks.

ARTHUR COWLES GAYLORD. Witnesses:

H. A. NELsoN, S. A. INeERsoLL.

